Laptop -solar charger

[kalimuthu]

Hi,
it's possible to charge laptop using solar charger.if can means how it's work?:roll:
/Thank you.

 

[coolmirza143]

it is possible to charge your Lappy with Solar for this you have to make an inverter 12V DC to 220v A.C,,,, then use your Laptop's Original charger...... it will works like this

<<Solar Panel_____12v Battery_________Inverter_________Laptop Charger____________Laptop___>>>>

 

[kalimuthu]

Hi Friend,
Thanks for your idea,but how long time take to charge 12v solar battery ? then laptop battery ?.do you have any schematic diagram for this...........+:roll::lol:

 

[mishra12]

here is the circuit

 

[smxx]

hi
Laptop power suplly is a switch mode type. In switch mode power suplly ,input change to dc at first ,and by a chupper it change to hi frequency and .....
So You can use DC source for for your Laptop power suplly (about 100vdc) dirrectly.

 

[kalimuthu]

OK .........fine.but total cast is expensive. it's worth able:|.

 

[enjunear]

Or you could just buy one...
Solar laptop charger - Results

 

[smxx]

it's need a DC/DC convertor only.
<<Solar Panel_____12v Battery_________chupper(Hi freq)---TR(very small Transformer)--rectifire-(very small filter)
It isnot expensive!!!!!
Also it's no need to control out put voltage to 100VDC. Laptop power suplly can use for 100-220vdc

 

[praveen sinha]

better u use conventional charger rather than solar.....
it is very much expensive lossy...

 

[betwixt]

Converting to AC mains supply first is extremely inefficient. It is better to convert the DC from the PV panel directly to the voltage needed by the laptop.

You have given very little information so it is not possible to advise you on specific parts or schematics. In general, this is what you have to do:

1. See how much power you actually need to produce, this is the voltage from your existing AC charger (it will be marked on it) multiplied by the charging current taken by the laptop. If in doubt, use the current rating of the charger instead. Looking at my AC charger it says 20V / 3.2 A so the poutput power is 64 Watts.

2. Add on a factor to reflect the losses in the conversion circuit, I suggest a figure of 25%, you can probably do slightly better than that but lets look at it "worst case". The power requirement target is therefore 80W.

3. No matter how you do the voltage conversion, your PV panels should be capable of producing at least 80W.

4. Depending on your PV panels, you may have to step the voltage up or step it down. The voltage will depend on how much illumination reaches the panel but if you assume it has maximum rated output and the voltage is less than the laptop requires, use a boost regulator to increase the voltage. If the PV output is higher than required voltage, use a buck regulator.

These suggestions will give you optimal use of the laptop and its batteries, to some extent you can reduce the charging rate and allow longer for them to 'fill up' but you need to know the exact cell specification to determine how to do that. The type of regulator remains the same though.

Brian.

 

[sTechnical]

A laptop requires energy to be fed into it at a certain rate. To prevent damage to the computer's workings it's important to maintain the flow of energy from the panel to the computer within certain parameters. Either a power center or an inverter and regulator must be installed between the panels and laptop.
hope this would help u..
thanks....

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